Policy Evaluation

2 articles

Rolling DiD with Few Units: Article-Reported Simulation

A guide to rolling difference-in-differences with few units. Simulation estimates and the Python rebuild are article-reported, not reproduced.

Jun 2026 · Methodology

When the parallel-trends test fails on one lead, what's left?

An article-reported TWFE-DiD exercise on SNAP BBCE adoption; the panel, estimates, and diagnostics are not publicly reproduced.

May 2026 · Methodology